In response, the major record labels appear to have obtained a temporary restraining order wresting away that domain name. According to Torrentfreak, the labels filed a lawsuit under seal in New York federal court. The site reports that US District Judge Deborah Batts issued a seizure order "directed at the site’s operators, hosting providers, and domain registrar NameCheap."

NameCheap appears to have quickly complied, and the grooveshark.io Web address no longer functions.

Torrentfreak has published part of a letter from the record label attorneys to the CEO of NameCheap, informing him of their lawsuit and NameCheap's required actions. Neither that letter nor the new lawsuit it relates to are available in public courts database.

The restraining order, seizure order, and order to show cause "may not be provided to Defendants or publicized in any manner," the letter adds.

Meanwhile, a true game of whac-a-mole appears to have begun, with the team behind the new Grooveshark telling Torrentfreak that they have simply moved their website to grooveshark.vc.

"The harder you come at us, the stronger we’ll fight, and now after this hit we’re more determined than ever to keep Grooveshark alive and kicking," the site's anonymous operator said.